A facile synthesis of aminomethylene bisphosphonates catalyzed by ytterbium perfluorooctanoate under ionic liquid condition
摘要:
Three-component reactions of amines, triethylorthoformate and diethyl phosphite are efficiently catalyzed by ytterbium perfiuorooctanoate [Yb(PFO)(3)] in 1-butyl-3-methylimidazolium chloride ([bmim][Cl]) ionic liquid, giving the corresponding aminomethylene bisphosphonates in good yields. The catalyst can be recovered and reused for several times without any significant loss of activity. (C) 2011 Elsevier B.V. All rights reserved.
A microwave-assisted solvent- and catalyst-free synthesis of aminomethylene bisphosphonates
作者:Babak Kaboudin、Soheil Alipour
DOI:10.1016/j.tetlet.2009.05.016
日期:2009.7
A convenient preparative approach for the synthesis of aminomethylene bisphosphonates is developed which involves treatment of amines with triethyl orthoformate and diethyl phosphite under microwave irradiation. (C) 2009 Elsevier Ltd. All rights reserved.
A facile synthesis of aminomethylene bisphosphonates catalyzed by ytterbium perfluorooctanoate under ionic liquid condition
Three-component reactions of amines, triethylorthoformate and diethyl phosphite are efficiently catalyzed by ytterbium perfiuorooctanoate [Yb(PFO)(3)] in 1-butyl-3-methylimidazolium chloride ([bmim][Cl]) ionic liquid, giving the corresponding aminomethylene bisphosphonates in good yields. The catalyst can be recovered and reused for several times without any significant loss of activity. (C) 2011 Elsevier B.V. All rights reserved.